Quick answers
- Does Gina Marrero accept Medicare assignment?
- Yes. Medicare's clinician data says Gina Marrero accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Gina Marrero see?
- In 2024, CMS data shows 477 Original Medicare patients and 1,268 services for Gina Marrero. This counts Original Medicare only and measures volume, not quality.
- What is Gina Marrero's NPI number?
- 1205835790. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Gina Marrero, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 477 |
|---|---|
| Services billed to Medicare | 1,268 |
| Different services or procedures | 28 |
| Participating Medicare provider | Yes |
| Average age of these patients | 79 |
Most frequent services
- Removal and microscopic exam of growth of head, neck, hands, feet, or genitals, 1-5 tissue blocks (17311)425 services
- Removal and microscopic exam of growth of trunk, arms, or legs, 1-5 tissue blocks (17313)175 services
- Removal and microscopic exam of growth of head, neck, hands, feet, or genitals, each additional stage, 1-5 tissue blocks (17312)171 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)109 services
- Intermediate repair of wound of scalp, underarms, trunk, arms, or legs, 2.6-7.5 cm (12032)107 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High blood pressure75%
- High cholesterol75%
- Arthritis49%
- Diabetes39%
- Ischemic heart disease39%
- Atrial fibrillation26%
Practice locations
Addresses where Gina Marrero is enrolled with Medicare (CMS data updated October 2, 2026).
- 28 Elm StHuntington, NY 11743 (631) 421‑4398
- 444 Merrick Rd, Suite Ll2Lynbrook, NY 11563 (516) 599‑4242
Group practices
Medicare enrollment lists Gina Marrero as a member of these groups (CMS data updated October 2, 2026).
- Atlantic Dermatologic Associates, LLP10 clinicians in the group
- Roger Koreen M.D., PC5 clinicians in the group
Specialties
Find other Undefined Physician Type (Specify) doctors in New York →
Other physicians in New York
Clinicians with the same Medicare primary specialty in New York — not a recommendation.
Other clinicians in Atlantic Dermatologic Associates, LLP
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | State University Of New York At Buffalo School Of Medicine |
| Graduation year | 1993 (33 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1205835790 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians